The naturalist is a civilized hunter. He goes alone into the field or woodland and closes his mind to everything but that time and place, so that life around him presses in on all the senses and small details grow in significance. He begins the scanning search for which cognition was engineered. His mind becomes unfocused, it focuses on everything, no longer directed toward any ordinary task or social pleasantry.

The biology of extinction is not a pleasant subject. The death of a species is especially disheartening to the scientists who study endangered and newly extinct species. Together these vanishing remnants of Earth's biodiversity test the reach and quality of human morality. Species brought low by our hand now deserve our constant attention and care.

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Daily life is a compromised blend of posturing for the sake of role-playing and of varying degrees of self-revelation. Under stressful conditions even the "true" self cannot be precisely defined, as Erving Goffman observes. ...Little wonder that the identity crisis is a major source of modern neuroticism, and that the urban middle class aches for a return to a simpler existence.

Because of mathematical indeterminancy and the uncertainty principle, it may be a law of nature that no nervous system is capable of acquiring enough knowledge to significantly predict the future of any other intelligent system in detail. Nor can intelligent minds gain enough self-knowledge to know their own future, capture fate, and in this sense eliminate free will.

A schema is a configuration within the brain, either inborn or learned, against which the input of the nerve cells is compared. ...the conscious mind ...can fill in details that are missing from the actual sensory input and create a pattern in the mind which is not necessarily present in reality. In this way, the gestalt of objects—the impression...—is aided by the taxonomic powers of the schemata.

True character arises from a deeper well than religion. It is the internalization of moral principles of a society, augmented by those tenets personally chosen by the individual, strong enough to endure through trials of solitude and adversity. The principles are fitted together into what we call integrity, literally the integrated self, wherein personal decisions feel good and true. Character is in turn the enduring source of virtue. It stands by itself and excites admiration in others. It is not obedience to authority, and while it is often consistent with and reinforced by religious belief, it is not piety.

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If we were to vanish today, the land environment would return to the fertile balance that existed before the human population explosion. Only a dozen or so species, among which are the crab louse and a mite that lives in the oil glands of our foreheads, depend on us entirely. But if ants were to disappear, tens of thousands of other plant and animal species would perish also, simplifying and weakening land ecosystems almost everywhere.